Apparatus for casting cylinders for phonographs or the like.



No. 757,ss7. A PATENTED APR. 19, 1904. A. HAMON.

APPARATUS FOR CASTING CYLINDERS FOR PHONOGRAPHS OR THE LIKE.

APPLICATION FILED 00'1.31, 1903.

K0 MODEL. I 3 SHEETS-SHEET 1.

Pie -1 V til PATENTBD APR. 19, 1904.

. A. HAMON. APPARATUS FOR CASTING CYLINDERS FOR PHONOGR-APHS OR THE LIKE! APPLICATION FILED OUT-31. 1903.

8 SHEETS-SHEET 2.

I0 MODEL.

No. 757,867. PATENTED APR. 19, 1904. A. HAMON.

APPARATUS FOR. CASTING CYLINDERS FOR PHON OGRAPHS OR THE LIKE.

APPLICATION nun 00131, 1003. I0 MODEL. 3 snnn'rs-snnm' a.

Pia--7- FEYFRS ca. Pumoumn. WASHINGTON. a. c

Patented April 19, 1904.

UNITED STATES PATENT OFFICE.

AUGUSTIN HAMON, ()F NEUILLY-SUR-SEINE, FRANCE.

APPARATUS FOR CASTING CYLINDERS FOR PHONOGRAPHS OR THE LIKE.

SPECIFICATION forming part of Letters Patent N0. 757,867, dated April 19, 1904.

Application filed October 31, 1903.

T 0 all whom it may concern:

Be it known that I, AUGUSTIN HAMoN,a citizen of the French Republic, residing at 9 Rue Garnier, Neuilly-sur-Seine, France, have invented certain new and useful Improvements in Apparatus for Casting Cylinders for Phonographs or the Like, of which the following is a specification.

This invention relates to apparatus for easting cylinders for phonographs, gramophones, and the like, and has for its object to enable a number of cylinders to be manufactured simultaneously in one apparatus and to produce such cylinders of a regular thickness and density and entirely free from air-holes.

To this end and according to this invention the apparatus comprises a series of four or more molds carried by a table and capable of being reciproeated vertically in a suitable frame, said molds being surmounted by a dish or tray containing the molten wax or other material of which the cylinders are to be made.

A series of cores and tubes or sockets,the upper edges of which form the bottoms of the molds, are provided corresponding in number to the molds,one being arranged concentrically within each mold, each core being provided with a helical groove or its equivalent.

A rotary movement and a rectilinear movement may be simultaneously imparted to the cores by any suitable mechanism, and the cylinders are cast by the relative displacement of the molds and said cores.

in order that my invention may be fully understood, 1 shall now describe the same with reference to the accompanying drawings,'of which- Figure 1 is a side elevation of one construction of the apparatus, showing the position of the several parts before the casting operation. Fig. 2 illustrates the upper part of the apparatus, showing the respective position of the molds and cores after the casting operation. Fig. 3 is a plan View of the core-operating gear. Fig. 4. is a plan view of the mold operating gear. Fig. 5 shows, on an enlarged scale, one of the molds with its core in its respective position after the casting operation. Fig. 6 is a top view of a cap placed on the core, the purpose of which is to automatically sep- SerialNo. 179,335. (No model) arate the cast cylinder from the wax remaining in the tray. Fig.7 is a side elevation, with sectional parts, of a modified form of the apparatus.

Referring first to Figs. 1 and 2, the apparatus comprises three stationary tables a b c, rigidly secured together by means of bolts cl and posts a, forming part of the frame of the apparatus. A movable table f is provided, which is carried on two vertical rods g, having a threaded part it, which fits into a nut 91, secured to the table 6, said rod ending in a square part Ir, capable of sliding in corresponding square holes provided in the boss of two pinions m, secured to the lowermost table a. The pinions m mesh with a central gearing wheel a, Figs. 1 and 4, and these wheels are operated from the crank p and bevel-wheels 0 0. When the pinions m m are rotated, a rotary movement simultaneously with a longitudinal movement is imparted to the rods g and IL, so that the table f will rise or fall as the pinions are rotated. in one or the other direction. On the table f are placed the molds g, which may be four in number, and over these molds is a tray 7' for the molten wax, said tray being securedto the table f by means of the bolts or tie-rods S. On

one side of the table f is secured a support on which rests a receiver 2," for the wax and means for melting this substance, which may be delivered into the tray 7* through the cook a. Concentrically to the molds are arranged the cores o, the outer-surface of which is provided with helical grooves, which are intended to form the inner helical ribs generally used in. phonograph-cylinders and also to enable the cores of being easily removed from the cylinders when cast without any risk of breaking the same. Each of these cores is guided in a socket m, which forms the bottom of the mold, Fig. 5, and said cores extend clownward in the form of threaded rods 1 fitting into nuts on the table 0, and the threaded rods end in the same manner as the rods it in square rods 1, adapted to slide in square holes in the boss of pinions 2 on the table 6. These pinions, which are four in number, mesh with a central gearing-wheel 3, secured to the upper end of a vertical shaft 4, to which a rotary movement may be imparted by means of bevel-wheels 5 and crank 6. In this manner a rotation is simultaneously imparted to the four cores, and in order to allow the latter of being unscrewed from the cylinders the pitch of the helical grooves of the'cores is the same as that of the threads One of'the features of this invention consists in providing each core at its upper end with a square hole, in which engages the square tail end 8 of a cap 9 to be placed upon the core. Said caps 9, Fig. 6, are formed with a series of peripheral notches 10, having sharp edges for the purpose of separating the cast cylinder from the wax remaining in the tray, as will be hereinafter explained. v

The apparatus works as follows: The operator first places the apparatus in tha position shown by Fig. 1, in which the movable table f is lowered and rests on the stationary table 0, while the cores 1; are raised. The cook 24 is then opened, and melted wax contained in the receiver 6 is allowed to flow into the tray 0. The crank 9 is then turned so as to raisethe table f, with themolds g, which are going to surround the cores. .The liquid substance contained in the tray fills the space which becomes formed between the molds and the cores, and in this manner the cylinders are cast. It is understood that by this means no air-bubbles are formed, and consequently there are no air-holes in the finished cylinder, as often occurs with the casting processes hitherto in use. After the wax is sufiiciently cooled the crank 6 is rotated in a suitable direction sharp or cutting edges cut-clean the upper parts of the cylinders. When the cores are completely lowered, the cylinders, with the caps, are removed from the molds in any convenient manner. The cores are then raised in the position shown in Fig. 1, and the apparatus is ready for the next operation.

This apparatus also may be built up in the modified form shown in Fig. 7 without departing from the principle of the present invention, the sole difference being that the molds are held stationary and that the movable parts of the apparatusare the cores and the sockets which form the bottom of the molds. In this figure the same references are used as in the foregoing figures. The molds g, which support the tray 1", are mounted on the table f which in this case instead of being movable is stationary and is rigidly secured to the table 0 by means of the bolts (Z or posts. The cores 1), which are movable concentrically to the molds, are secured to the upper end of threaded rods y with square parts 1, and they can receive a simultaneous rotary movement and longitudinal movement from the gear 2 3, operated by the shaftt and bevel-wheels 5. The socket-s 00, which form the bottom of the molds, are in form of sleeves adapted to fill the free space between the molds and the cores, and they are secured to or in one piece with a movable table l2, to which up-and-down movements may be imparted by any convenient mechanism. This may, be effected, for example, by supporting said table 12 on stay-rods 17, which are guided vertically in the table 0 and attached at their lower end to the levers 16, keyed on a shaft 1 1, supported in bearings 15 of the frame 0 of the machine, a hand-lever 13 being secured to the outer end of the shaft 14 for the purpose of imparting to the same a reciprocating angular displacement.

The apparatus worksas follows: The severalparts being in the position shown on the left side of Fig. 7 -say the cores and the sleeve 00 being raised up to the upper edge of the molds and the caps (not shown) being placed upon the coresmelted wax is poured in the tray The sleeves m then are lowered by operating the handlever 13 and brought in the position shown in the right-h and side of Fig. 7. The wax fills the annular space between the molds and the cores, so that the cylinders are cast in the same manner as in the foregoing device.

When the wax is cooled down, the cores are lowered by means of the gear 2 3 4 5, and finally the sleeves m are raised again, and the cylinders, which are now finished, project from the tray 0* and can be easily removed from the machine.

Having now particularly described and ascertained the nature of my invention and in what manner it is to -be performed, I declare that what I claim is- 1. The combination with a mold and a core within the same peripherally grooved, and mechanism connected therewith for effecting positively the movement of one of said parts in the direction of its length with respect to the companion part.

2. The combination with a mold and a core within the same peripherally grooved, and mechanism connected therewith for'causing positively the reciprocation of one of said parts with respect to the companion part.

3 An apparatus of the character described, consisting of a mold, a grooved core within the same, and mechanism connected therewith for effecting positively the rotation of said core and simultaneously moving it in the direction of its length.

4. In an apparatus of the character described, a mold, a grooved core within and concentric to the mold, a cutting member carried by said core for the purpose of cutting clean the edge of the finished cylinder.

5. In an apparatus of the character described, the combination of a cylindrical mold,

a helical grooved core within the mold, a cutting member carried by the core for cutting clean the upper edge of the finished cylinder,

and means for rotating and reciprocating the core.

6. An apparatus for casting cylinders for phonographs and the like, consisting of a mold, a grooved core within and concentric to the mold, a tray supported by the mold, mechanism for imparting a rotary and reciprocating movement to the core, means for actuating said mechanism, and means for cutting clean the upper edge of the cylinder when cast.

7. An apparatus of the character described, a cylindrical mold, a helical grooved core within the mold and a cap on said core having a square-shaped tail end engaging a square hole of the core and sharp edges for the purpose of cutting clean the upper edge of the finished cylinder.

8. An apparatus of the character described, consisting of a series of cylindrical molds, helical grooved cores within and concentric to the molds, and means for advancing said cores consisting of vertical threaded rods and relatively fixed nuts on each of said rods in combination with a gear mechanism and a handoperated crank.

9. In an apparatus of the character described, the combination of molds, helical grooved cores within the molds, a tray carried by said molds for the reception of the molten wax, means for imparting to the cores a rotary and reciprocating movement, and means for cutting clean the upper edge of the cylinder when cast.

10. In an apparatus for casting cylinders "for phonographs and the like, the combination of cylindrical molds, helical grooved cores within and concentric to the molds, sockets forming the bottom of the molds between the molds and the cores, a tray for receiving the molten wax supported by the molds, means for imparting to the cores a rotary and recip rocating movement, and means for cutting clean the upperedge of the cylinder when cast.

11. An apparatus of the character described, a series of cylindrical molds, helical grooved cores within and concentric to the molds, vertical reciprocating sleeves between the molds and the cores, and means for imparting either to the cores or the sleeves vertical reciprocating movement.

12. An apparatus of the character described, a series of stationary cylindrical molds in connection with a tray for the wax, helical grooved cores within the said molds, means for moving said cores up and down, a series of sleeves in the annular space between the molds and the cores, and means for reciprocating said sleeves.

13. An apparatus of the character described, a series of stationary cylindrical molds in connection with a tray for the wax, helical grooved cores within the said molds, means for moving said cores up and down, a series of sleeves in the annular space between the molds and the cores, and means for reciprocating said sleeves consisting of vertically-guided stay-rods, and levers at the lower end of said rods. a shaft for receiving said levers and a hand-lever for operating said shaft.

14. In an apparatus of the character described, a mold, a grooved core within the mold, a vertically-reciprocating sleeve between the mold and the core, and means for independently operating the core and the sleeve. 15. An apparatus of the character described, a series of cylindrical molds, helical grooved cores within the molds, a cutting member carried by each of the cores for cutting clean the upper edge of the finished'cylinder, means for reciprocating said cores, a series of sleeves in the annular space between the molds and the cores, and means for independently operating each of said sleeves in opposite directions from one another.

16. An apparatus of the character described, a series of stationary cylindrical molds in connection with a tray for the wax, helical grooved cores within and concentrically to said molds, means for reciprocating said cores, a series of sleeves in the annular spaces between the molds and cores, having cuttingmembers carried by each of said cores for cutting clean the upper edge of the finished cylinder and means for reciprocating each of said sleeves for ejecting the finished cylinder.

17 An apparatus of the character described consisting of a mold, a grooved core within the mold, a cutting member carried by the said core, means for reciprocating the said core and means for ejecting the finished cylinder from the mold.

18. An apparatus of the character described, consisting of ascries of molds, helical grooved cores within and concentric to the molds, acutting member carried by each of said cores, means for rotating and reciprocating the said cores, a series of movable sleeves in the annular spaces between the molds and the cores, and means for moving said sleeves for ejecting the cylinder when cast.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

AUGUSTIN HAMON.

Witnesses:

AUGUSTUS E. INGRAM, ALFRED FREY. 

